Question
Which statement describes a population?
(A) all the three-spined stickleback fish living in a lake
(B) all the organisms living in a lake
(C) all the fish living in a lake
(D) all the three-spined stickleback fish that have ever lived in a lake
▶️Answer/Explanation
Ans: A
Question
The graph shows how the population of the world has increased over time.
Which growth curve phase is represented by region P?
A) death phase
B) exponential (log) phase
C) lag phase
D) stationary phase
▶️Answer/Explanation
Ans: B
Question
Lichens are organisms that do not grow well in polluted air.
Which graph shows the change in the number of lichen species from the centre of a polluted city
to the unpolluted countryside 15 km away?
▶️Answer/Explanation
Ans: C
Question
The graph shows the increase in the human population of the world since 1630.
What was the longest time taken for the population to double?
A 100 years B 200 year C 300 years D 400 years
▶️Answer/Explanation
Ans: B